Tech Support


CUTTING DATA-End Mills
Suggested Speed and Feed Data For Solid Carbide End Mills
 
Dia. Of Cutter
Cutting Speed
Carbon Steel
< 28 HRC
Carbon Steel
28 - 45 HRC
Stainless Steel
Super Alloys
Cast Iron
RPM
F / Tooth
RPM
F / Tooth
RPM
F / Tooth
RPM
F / Tooth
2
40
6369
0.03
6369
0.024
6369
0.02
6369
0.044
3
45
4777
0.045
4777
0.036
4777
0.03
4777
0.066
4
50
3981
0.06
3981
0.048
3981
0.04
3981
0.088
5
50
3185
0.075
3185
0.06
3185
0.05
3185
0.11
6
50
2654
0.09
2654
0.072
2654
0.06
2654
0.132
8
50
1990
0.12
1990
0.096
1990
0.08
1990
0.176
10
60
1911
0.15
1911
0.12
1911
0.1
1911
0.22
12
60
1592
0.18
1592
0.144
1592
0.12
1592
0.264
14
60
1365
0.21
1365
0.168
1365
0.14
1365
0.308
16
70
1393
0.24
1393
0.192
1393
0.16
1393
0.352
18
70
1238
0.27
1238
0.216
1238
0.18
1238
0.396
20
70
1115
0.3
1115
0.24
1115
0.2
1115
0.44
 
 

CUTTING DATA-Drills
Suggested Speed and Feed Data For Solid Carbide Drills
 
Dia. Of Cutter
Cutting Speed
Carbon Steel
< 28 HRC
Carbon Steel
28 - 45 HRC
Stainless Steel
Super Alloys
Cast Iron
RPM
F / Tooth
RPM
F / Tooth
RPM
F / Tooth
RPM
F / Tooth
2
35
5100
0.4
5100
0.3
5100
0.02
5100
0.044
3
40
4246
0.045
4246
0.036
4246
0.03
4246
0.066
4
45
3583
0.06
3583
0.048
3583
0.04
3583
0.088
5
45
2866
0.075
2866
0.06
2866
0.05
2866
0.11
6
45
2389
0.09
2389
0.072
2389
0.06
2389
0.132
8
50
1990
0.12
1990
0.096
1990
0.08
1990
0.176
10
50
1592
0.15
1592
0.12
1592
0.1
1592
0.22
12
50
1327
0.18
1327
0.144
1327
0.12
1327
0.264
14
55
1251
0.21
1251
0.168
1251
0.14
1251
0.308
16
60
1194
0.24
1194
0.192
1194
0.16
1194
0.352
18
60
1062
0.27
1062
0.216
1062
0.18
1062
0.396
20
70
1115
0.3
1115
0.24
1115
0.2
1115
0.44
 
 
* Reduce feed rate by around 30% in case of long / extra long tools.
** Increase speed by 25% for coated tools.
 
Formulae
Cutting Speed
=
(p x Dia. Of cutter x RPM) ÷ 1000
Feed in mm/rev.
=
Feed (mm) / Tooth x No. of flutes
Feed in mm/min.
=
RPM x Feed (mm) / rev.
Cutting time
=
Cutting Length ÷ Feed (mm) / min.
 
 

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